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29 * Copyright 2007 Develer S.r.l. (http://www.develer.com/);
33 * \brief Collection of functions to manage entropy pool.
36 * \author Daniele Basile <asterix@develer.com>
38 * $WIZ$ module_name = "randpool"
39 * $WIZ$ module_depends = "timer", "sprintf"
40 * $WIZ$ module_configuration = "bertos/cfg/cfg_randpool.h"
43 #ifndef ALGO_RANDPOOL_H
44 #define ALGO_RANDPOOL_H
46 #include "cfg/cfg_randpool.h"
47 #include <cfg/compiler.h>
51 * Sturct data of entropy pool.
53 typedef struct EntropyPool
55 size_t entropy; ///< Actual value of entropy (byte).
56 size_t pos_add; ///< Number of byte added in entropy pool.
57 size_t pos_get; ///< Number of byte got in entropy pool.
58 size_t counter; ///< Counter.
60 #if CONFIG_RANDPOOL_TIMER
61 size_t last_counter; ///< Last timer value.
64 uint8_t pool_entropy[CONFIG_SIZE_ENTROPY_POOL]; ///< Entropy pool.
69 void randpool_add(EntropyPool *pool, void *data, size_t entropy);
70 void randpool_init(EntropyPool *pool, void *_data, size_t len);
71 size_t randpool_size(EntropyPool *pool);
72 void randpool_get(EntropyPool *pool, void *data, size_t n_byte);
73 uint8_t *randpool_pool(EntropyPool *pool);
75 #endif /* ALGO_RANDPOOL_H */